Insects and Spiders - invasive

Elm leaf beetle (Xanthogaleruca luteola) on Aug 11, 2023

Originally reported as Leaf Beetles (family Chrysomelidae)

Submitter has sample

Description of specimen

Small black and yellow/gold beetle approximately 5mm long. two tiny black dots just behind the head on the thorax with a slightly larger black elytral marking. Two larger black elytral markings on the left and right side just above the legs.

Commentary

Thank you for your report! Elm leaf beetle (Xanthogaleruca luteola) is a European species already established in Oregon. They can be managed with an insecticide labeled for this insect, or egg masses can be removed by hand and destroyed.
Thanks for being on the lookout!

Tom Valente
Aug. 11, 2023, 8:31 a.m.

Location

On the top of sucker growth in the front yard of the home. Several Elm trees were cut down which caused heavy sucker growth along the property line. Home is in a residential neighborhood.

Expert Reviewer

Tom Valente
Oregon Department of Agriculture

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